We have a Java EE JSF application hosted on wildfly that uses RIO primefaces theme that was developed in early 2016. I now have to revitalize the project and upgrade all dependencies if possible. One of them is

which we bought back in the days and worked fine.
I found a migration guide at this [site][https://www.primefaces.org/eos/rio/docs ... tion.xhtml] , nevertheless I don't know where to get the actual sources that I need as well as the current maven dependency. Please provide me with some ideas how to accomplish that.